Sound-reproducing apparatus.



S. D. MOTT.

SOUND REPRODUCING APPARATUS.

APPLICATlON FILED FEB. 7.191s.

INVENTOR (///7Z(6/ /770 Offer/1 f/lsr UN]1TED snares PATENT other.

.saniunr. n, norm, or PASSAIC, new JnitsnY, ASSIGNOR or ONE-HALF roearner. n.

. SULLIVAN, or ALLENDALE, new JEasnY.

soulvn-anrnonuoiive arraiaarus.

11.24%861. Specification-oi Letters Patent. v Paibgmitqgqfl Nwv 2%,1911'? Application filed February 7, 1916-. Serial No. were. i

- J To all whom it may concern: ameter without providing the specialcomto Be it known that ll, SAMUEL D. Mom, a pensating devices abovereferred to and citizen of the United States, and a resident whichpermits the reproduction of comof Passaic, inthe county of Passaic andpositions heretofore not practical.

State .ofNewJersey, have invented certain Other objects will be apparentfrom the new and useful Improvements in Sound-Revsubjoined description,among which might producing Apparatus, of which the followbe mentionedthe reduction of the number mg is a specification.- s of movable jointsor connections in the re- This invention relates to soundreproducproducing arm to which the sound box carry- 1o ing apparatussuch as phonograph's, gramoing the stylus is attached whereby the lia-15 attain a sound repr phones and the like and more particularly bilityto loose connections owing to conto the types of J apparatus, known asdisk tinued use and the consequent imperfect opmachines. eration of thearm is practically overcome.

Among the ob ects of the invention is to i The invention consists in theimproved oducnig machine using construction and operation of soundreproa disk record in which the stylus will mainducing apparatushereinafter described and tain the same relation to eachrecord groove inthe details of construction and combiin which it is traveling withoutthe pronations of parts hereinafter more particuvision of specialcompensating devices and larly set forth and then specified in the soattachments for varying the position of the claims. stylus. needleas ittravels in the record In theaccompanying drawingahigure 1 cove. The mostadvantageous relation illustrates in plan view the mechanism, in or thereproduction of sound is to posiaccordance with this invention, forrotating tion the stylus or needle so that it will be the record and forcausing it to travel 25 tangentto the record groove in which the bodily,the balance of the apparatus being stylus p is engaged. By maintainingthis gremoved. position for all grooves of the record, in- Fig. 2 is aside elevation and partial crosscreased life is given to the record anda section through a sound reproducing appamore perfect reproduction ofthe sound is ratusconstructed in accordance with this 3o 1 attained, aswhen the position of the stylus invention, the cabinet containing theamplivaries from tangency, the needle breaks or fying horn being brokenaway. chips thewalls of the grooves and destroys Fig. 3 is a similarview illustrating a the record as well as failing in accurately slightmodification in the disposition of the reproducing'all the soundsregistered in the 7 disk driving mechanism.

3 as groove. I am aware that it has been here- Fig. 4. is a similar viewto Fig. 3 showing tofore proposed, especially in machines in the partsas shifted'to position to return the so which the record disk rotatesona fixed su'pturntable to its original position. port andthe sound boxtravels-across it, to Fig. 5 is a plan view of the apparatus. vary therelation of the sound box to the In the drawings, 1 indicates a cabinetor to record as it moves across it by mechanical box upon or in whichthe operating parts A compensating devices of various designs, but ofthe apparatusvare mounted. 2 indicates a us such expedients have failedto come into horizontal, driving shaft provided with a commercial practce Owing to the undesir-. screw thread. or worm 3 .formed thereon.ability of increasing and complicating the lhe shaft 2 isrotatablymounted in suitable a5 mechanism of sound reproducing machinesbearings ,formed in standards 4: supported with the attendantunreliability. By this by the cabinet. or box 1, in the form illus- Weinveiition' I maintain the sound box in a trated in Figs. 1 -and 2 theshaft being a stationary position and cause the rotating mount on thetop of thecabinet. 5 indicates record disk to travel with relation to itin a pinion carried by a vertical spindle 6 and so such manner that Imaintain tangency of meshing with the screw threador worm 3.

the stylus with the groove in which it is The spindle 6 supportsandcarries the turnroe v traveling. 1 1 table 7 which in turn carries therecord disk Bythis invention it is also possible to suc- 8. as usual.-The spindle 6 is supported and cessfully employ records of almost anydicarried-by an arm 8 loosely and pivotally mounted to travel freely 2.The "rack 11 resting on the top of the 'by brackets 10 from the by theusual gooseneck 16 of the amplifying horn on a guide rod 9 supportedparallel with the driving shaft 2 standards 1.

11 indicates a toothed arm 8, the teeth of which are adapted to meshwith the screw thread 3 on the shaft shaft 2 supports the turntable 7 inhorizontal position with the pinion 5 in mesh with the screwthread 3.

12 indicates a motor of any suitable kind for glvmg rotation to thedriving shaft 2. Upon rotation of the shaft the pinion 5 is. rotated bythe screw thread 3 thus rotating the spindle 6 and turntable 7 about itsaxis and at the same time by means of the engagement of the rack 11 withthe screw thread 3 the spindle 6 carried bodily and longitudinally. ofthe driving shaft, the various directions of rotaiion and travel beingindicated by arrows in The turntable 7 may be returned to its initial orany other position at any time by swinging the arm 8 upward about itspivot connection on the guide rod 9 which action removes both the rack11 and pinion 5 from engagement with the screw thread 3.

13 indicates a reproducer arm fixedly mounted on the cabinet 1 in astationary position. The reproducer arm is provided with a sound box 14of any desired construction having a stylus or needle 15 adapted totravel in the record grooves in the disk ,5 as well known in t e art.The sound box is pivotally connected with the reproducer arm so that thesound box and stylus maybe swung away and held free of the record asusual.

The reproducer arm 13 passes down into the cabinet 1 and terminates inan amplifying horn 17 of any desired construction or arrangement. Thelocation or arrangement forms no part of the present invention andfurther illustration is deemed unnecessary.

In the form of the invention shown in Figs. 3 and 4 the parts andoperation are the same as above described except that they are locatedwithin the cabinet 1. and the driving shaft 2 is supported in the sidesthereof while the guide rod 9 is supported in standards 18 dependingfrom the top of the cabinet. I

In both forms rotation of the shaft 2 y means of the motor causes therecord disk rotate and travel bodily under the stylus 15 I in thegrooves of the record v reproduces the sounds recorded therein. It

which traveling will be noted that the stylus remains in one verticalposition and is at all times tan ent to the record groove in which it istraveling, the pitch of the screw. rack and pinion being synchronizedwith the record. grooves.

It will be understood that the invention is rack secured to the Y andturntable 7 are By the term stationary sound box herein it will beunderstood that a sound box which does not move zontal plane is intendedas it may move in a vertical plane to follow the undulations of therecord dis What I claim as my invention is 1. .In an apparatus forreproducing sound, the combination of a stationary reproducer arm, soundbox and stylus, a turntable, a rotatable feed screw and means engagingsaid feed screw and adapted to rotate said turntable and move it bodilywith respect to said stylus and sound box. I

11 an apparatus for reproducing sound, the combination of a stationaryreproducer arm, sound box and stylus, a turntable, a feed screw and anarm carrying said turntable and having means engaging said feed screw torotate said turntable and move it bodily with respect to the stylus andsound box.

3. In an apparatus for sound, the combination of a stationary reproducerarm, sound box and stylus, a turntable, a feed screw and a pivoted armhaving means engaging said feed screw and adapted to rotate saidturntable and move it bodily with respect to said stylus and sound screwfor rotating said turntable and a toothed rack also engaging said feedscrew for moving said turntable bodily with respect to said stylus andsound box.

In an apparatus for reproducing sound, the combination of a stationaryre producer arm, sound box and stylus, a turntable, a rotatable feedscrew and means engaging said feed screw and adapted to rotate saidturntable and move it bodlly wlth respect to said stylus and sound box,said means also being adapted to be lifted out of engagement with saidfeed screw to permit said turntable to be moved independently said feedscrew.

7. In an apparatus for reproduclng sound, the combination of astationary reproducer arm, sound box and stylus, a turntable, a feedscrew, a rod running parallel to or travel in a hori reproducing box andstylus, a turn-.

raised on its pivot to release said pinion and IRENE LEFKOWITZ.

said feed screw, an arm pivoted to said rod toothed rack from theirengagement with 10 and supporting said turntable, a pinion ensaid feedscrew.

gaging said feed screw and connected with Signed at New York, in thecounty of said turntable for rotating the same and a New York and Stateof New York, this 1st toothed rack carried by said arm and also day ofFebruary, A. 13/1916.

engaging said feed screw for moving said SAMUEL D. MOTT. turntablebodily with respect to said stylus Witnesses: and sound box, said armbeing adapted to be F. B. TOWNSEND,

